Improvement



A. G. BUZBY;

I Magic-Lantern.

No'.'l62,896.

Patented May 4,1875.

Zia/2 THE GRAPHIC C0.PHOT0.-LITH.39&41 PARK PLACE,N-Y.

ALBERT Gr. BUZBY, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT lN MAGI C LANTERNS Specification forming part of LettersPatent No. 162,596, dated May 4, 1375; application filed March 12, 1875.

Crisis A.

To all whom it may concern:

Be it known that I, ALBERT G. BUZBY, of

Philadelphia, Pennsylvania, haveinvented certain Improvements in MagicLanterns, of which the following is a specification:

The main'objects of my improvements are, first, to gain ready access tothe interior of the body of a magic lantern or stereopticon; second, toprevent the fracture of the main lenses; third, to readilyattach thelens-socket to and detach it from the body of the lantern; fourth, to soconstruct the chimney of the lamp that the sheets of mica can be readilyfitted to the same and removed when damaged; and, fifth, to so combinethe lamp and its chimney with the top of the lantern that they can bewithdrawn and replaced without disturbing the same. These objects Iattain in the manner which I will now proceed to describe, referencebeing had to the accompanying drawing, in which Figure 1 is a transversesection of the body of the lantern; Fig. 2, a longitudinal section ofthe front portion of the body; Fig. 3, a view of the front end of thesame Fig. 4c, a perspective view of the lamp-chimney, and Fig. 5 asectional plan of the same.

The body A of the lantern consists of a wooden box, the opposite sides aand a of which are lined with sheet metal, or the entire lantern may beconstructed of metal.

The top B of the box consists of a sheetmetal casin g, by preference ofthe shape shown in Fig. 1, this top having the usual tubular projectionh, for receiving the lower end of the metal chimney, and the front endof the top is adapted to the cylindrical lens'holder 1), the rear endbeing open, but so as to be closed by a hinged door adapted to the rearof the body. One edge of the top B is hinged to the upper edge of oneside, a, of the body, the other edge of the top fitting snugly to theopposite side of the body, where it may be secured by any suitablefastening, and released whenever the top has to be moved back, as inFig. 1, for gaining access to the interior of the body.

WVhen the top is depressed it is very nearly in contact with the upperend of the chimney,

but not so close to the latter as to prevent the removal of both lampand chimney without disturbing the top, the tubular projection h ofwhich is directly above the chimneywhen the lamp is in its place, sothat there will be a direct draft through the lamp-chimney and mainchimney.

The cylindrical lens-holder D is arranged to fit snugly in asemicircular recess in the front b, in which position it is retained bytwo simple studs, 0 e, the heads of which overlap a flange, f, securedto or forming a part of the lens-holder. These studs, as will be seen inFig. 3, are so situated that after the cover B has been raised thelens-holder can be readily withdrawn vertically from its bearings, andas readily refitted to its place.

. The main lenses of stereopticons and magic lanterns are liable to befractured by the heata difficulty which I overcome by perforating thatportion of the holder which is fitted to the end b of the box, as shownin Fig. 2.

I have found that by perforating the lens rings, and thereby permittingthe air to circle late freely through the holder and between the lenses,the fracture of the latter is prevented.

The lamp H is similar to that for which Letters Patent No.150,82 l weregranted to me on the 12th of May, 1874, and the chimney G shown consistsof a frame of sheet metal fitted with sheets of mica; but in the presentinstance the frame is so constructed that the mica strips can be readilyremoved from and replaced in the frame.

It will be seen on referring to Figs. 4 and 5 that the frame consists ofthe upper and lower rims m and a, connected together by strips 12 11,each of the latter being of sheet metal, so

a bent as to form grooves w .r, so that the two strips t of mica may befitted to the frames by first bending each sheet in one hand and holdingthe frame, and then sliding the strip with each edge in a groove, 00,from the base of the frame upward.

I claim as my invention- 1. The combination of the body A of astereopticon or magic lantern with the cover B, hinged to one side ofthe said body, as set forth.

2. In a magic lantern, a lamp and chimney 5. The chimney-frame composedof the endeombined with the top of the body, substanless strips m and nof sheet metal and the tially as described, so as to permit theWithconnecting-strips p, with their grooves 00 m. drawal and replacingof the said lamp and In testimony whereoflhavesigned myname chimney, asspecified. to this specification in the presence of two sub- 3. Thelens-holder D, perforated in the manscribing witnesses.

her and for the purpose described. ALBERT G. BUZBY.

4. The lens-holder D and its flange f, in \Vitnesses:

combination with the studs 6 at the end of the HUBERT HoWsoN,

box. HARRY SMITH.

